Hook



FIG. 1 shows a perspective view of a hook showing the present design;

FIG. 2 shows a front elevational view thereof;

FIG. 3 shows a rear elevational view thereof;

FIG. 4 shows a top plan view thereof;

FIG. 5 shows a bottom plan view thereof;

FIG. 6 shows a left side elevational view thereof; and,

FIG. 7 shows a right side elevational view thereof. 

The ornamental design for a hook, as shown. 